CVE-2026-88032Application denial of service via cancellation race in reactive client-side encryption in MongoDB Java Driver
Updated under an hour ago ()
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It affects MongoDB Java Driver and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A use-after-free in the reactive client-side encryption component of the MongoDB Java Driver can cause native resources to be freed while an affected encrypted operation is still using them when the operation is cancelled. A party able to cause such an operation to be cancelled may cause the hosting application process to terminate. Reaching the issue requires an affected reactive encryption configuration that retrieves KMS credentials on demand.
- CVSS
- 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Analyzed
- Record last updated
- Sep 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB Java Driver mongodb:java_driver (from the name) | from 4.2.0 before 5.11.1 | CNA record |
MongoDB org.mongodb:mongodb-crypt Maven package mongodb:org.mongodb_mongodb_crypt_maven_package (from the name) | from 1.4.0 before 5.11.1 | CNA record |
MongoDB org.mongodb:mongodb-driver-reactivestreams Maven package mongodb:org.mongodb_mongodb_driver_reactivestreams_maven_package (from the name) | from 4.6.0 before 5.11.1 | CNA record |
mongodb java_driver mongodb:java_driver | from 4.2.0 before 5.11.1 | NVD |
References
- https://jira.mongodb.org/browse/JAVA-6276vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.